| Standard: | ASTM B729 | Certification: | ABS， GL， DNV， NK， PED， AD2000， GOST9941-81， CCS， ISO 9001-2008 |
|---|---|---|---|
| Test: | ET， UT， HT， PT | Type: | Seamless |
| O.D.: | 1- 254 Mm | W.T.: | 0.1 To 20mm |
| High Light: | Alloy20， No8020， ASTM B729 | ||
ASTM B729 No8020 Alloy20
TONG CHUANG Group has been dealing in stainless steel/duplex/nickel steel for more than 33 years， with annual sales of more than 15000 tons of stainless steel/duplex/nickel steel. Our customers have covered more than 55 countries. Our Stainless Steels and tubes are widely used in mining， energy， petrochemical， chemical， food plants， paper mills， gas and fluid industries， etc. ANSI B16.10: B16.19 SCH 5S， SCH 10S， SCH 20， SCH 30， SCH 40S， SCH 60， SCH80S， XS， SCH 100， SCH 120， SCH160， XXS
What is ASTM B729 No8020 Alloy20 ?
ASTM B729 No8020 Alloy20 refers to a specific type of made from Alloy 20， which is a nickel-iron-chromium alloy with excellent resistance to corrosion， particularly in sulfuric acid environments. ASTM B729 is the specification standard set by the American Society for Testing and Materials (ASTM) for made from Alloy 20.
The No8020 designation indicates the specific composition of the alloy， which consists of approximately 34% nickel， 20% chromium， 3-4% copper， and small amounts of molybdenum， niobium， and iron.
Alloy 20 made in accordance with ASTM B729 are commonly used in various industries such as chemical processing， pharmaceutical， food processing， and power generation， where resistance to corrosion is critical. These pipes are known for their high strength， durability， and ability to withstand harsh environments.
ASTM B729 20 Alloy Equivalent Grades
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN |
| Alloy 20 | N08020 | 2.4660 | Z2NCUD31-20AZ | NiCr20CuMo |
Alloy UNS N08020 Chemical Composition
| Alloy 20 | Ni | C | Mo | Mn | Si | Fe | P | S | Cr | Nb | Cu |
| 32 – 38 | 0.02 max | 2 – 3 | 1 – 2 | 0.7 max | Bal | 0.02 max | 0.005 max | 19 – 21 | 0.1 – 0.3 | 3 – 4 |
Alloy WERKSTOFF NR. 2.4660 Mechanical Properties
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 8.1 g/cm3 | 1443 °C (2430 °F) | Psi – 35000 ， MPa – 241 | Psi – 80000 ， MPa – 551 | 30 % |
Application
Oil and gas
heating exchanger
chemical Industry
food processing Industry
power Plant
plumbing
paper & pulp industry
